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Date:   Sun,  3 Jan 2021 22:40:51 +0100
From:   Arnd Bergmann <>
To:     Alasdair Kergon <>,
        Mike Snitzer <>,,
        Song Liu <>,
        Bart Van Assche <>,
        Hannes Reinecke <>,
        Damien Le Moal <>
Cc:     Arnd Bergmann <>,,
Subject: [PATCH] dm zoned: select CONFIG_CRC32

From: Arnd Bergmann <>

Without crc32 support, this driver fails to link:

arm-linux-gnueabi-ld: drivers/md/dm-zoned-metadata.o: in function `dmz_write_sb':
dm-zoned-metadata.c:(.text+0xe98): undefined reference to `crc32_le'
arm-linux-gnueabi-ld: drivers/md/dm-zoned-metadata.o: in function `dmz_check_sb':
dm-zoned-metadata.c:(.text+0x7978): undefined reference to `crc32_le'

Fixes: 3b1a94c88b79 ("dm zoned: drive-managed zoned block device target")
Signed-off-by: Arnd Bergmann <>
 drivers/md/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index b7e2d9666614..a67b9ed3ca89 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -622,6 +622,7 @@ config DM_ZONED
 	tristate "Drive-managed zoned block device target support"
 	depends on BLK_DEV_DM
 	depends on BLK_DEV_ZONED
+	select CRC32
 	  This device-mapper target takes a host-managed or host-aware zoned
 	  block device and exposes most of its capacity as a regular block

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